Freezer.



G. F. DIOKSON.

FREEZER.

APPLICATION FILED JAILZQ, 1906.

Patented Mar. 15, 1910.

2 SHEETS-SHEET 2.

\N RN M m I l u osaoa o.

a M i BAKERS SUPPLY 00. or

{certain new and useful ln provemt-z fts Freezers, of which thefollowing is a spec1-' ficat-ion. v

This invention relates to freezing apparatus for, the production ofice-creamand like flavored ices, and has for itsobject to provide asimple and eflicientstructuralarrangeme'nt'and combination ofpart's,where by'the formation "of the aforesaid frozen ices is attained-in arapid, co1itinuous' and economicalmanner, and 'with which the material?from which such ices are formed is kept in constant movement during theoperation to attain a uniform grade the finished product.

1, is a side elevation. Fig. 2, 1s a plan view; F ig. 3, is an enlargedfragmentary top view,

= with parts broken away to illustrate the instandardsflQ for thesupport of t ternal construction of the freezer 4, is an enlarged detaillongitudinal section on line w-a2,-Figs 2 and 3. 5, is-a transversesection on line w-.m", 4. Fig. 6,

; niaiTED STA E J 'GEOR-GE F. DICKSON, OF CHICAGO, ILLINOIS, ASSIGNOB'.I.0v CONFECTIO CHICAGO, ILLINQIS, CORPORATION HILINOIS.

v Specification pf Letters Patent.

Application ma Januar aa 'iooea Serial No. geasca.

provide a closed freezing In the accompanying drawings: Figure is anenlarged detail transverse section on line 42 Fig. 4, illustrating ascraper blade and its accessories.

Similar numerals of references indicate:

like parts in,theseveral views.

Referring .to the drawings, 1v represents a base provided with aseries'of ugri hts or e ereinafter described 'casings of the freezin chambers,and for the carrying shaft of t e stir rers. etc. of the same.

3 is an outer cylindrical casing fixedly secured on saddles 2 at theupper ends of a set of the aforesaid standards 2, and preferably ina'direction inclined from the honzonfor the purpose hereinafter stated.

4 is an inner cylindrical casing arranged concentric relation within theaforesaid .cas ings vthrough which the cooled brine or outer casing 3,and attached thereto y nular end heads 5 and 6, of the usual flangedform shown. $uch construction provides a' closed annular chambervbetweenthe two other like cooling mediumds pumped as usual in the present classof cooling apparatus.

7. are a series of longitudinal partitions .diameter, and extendsremoval of the a tatin Patented Mamas, indie;

annular chamber, to divide the same into a series of sub-chambers orpassages which are 8 is the inlet neck or pipe for the cooling" fluid,and 9 is the outlet neck for the same; such pipes areconnec'ted to thecirculatingpump; by which the brine or like cooling medium is circulatedin manner common to refrigerating apparatus.

,10' arid 11 are closure heads secured ina 1 arranged radially the abovedescribed detachable'manner to the respectiveends of;.--.--

the aforesaid inner cylinder or.casing 4*, to

cream or like material to be chamber: in the preferred form' of thepresent improvement has a much greater length than" in- 'a directioninclined from the horizon, as shown.

chamber for the frozen,and such In .the construction shown, thedetachable connection of said closure heads 10'- and 11,

comprises interiorly screw t-hreaded margmal rims on said heads havingengagement with correspondingly formed end portions 35 of the cylinderor casing 4, as shown more particularly in Figs. 3 and 4. With sucharrangementaccess to the interior of the easing' for cleansing purposes,as well as for the described, is very. conveniently attained.

12 is'the inlet neck through which the ma- -terial to be frozenfreezing" chamber aforesaid, and 13' is the outlet neck at the other endof said chamber for the outflow'or discharge of the frozen enters intoone end of the material. Said outlet neck 13, is preferablydownturned'asshow'n to. prevent splashing of-the frozen material, and ispreferably carried by the end closure be removable therewith. w

14 1s a revoluble shaft arranged axially within the freezing-chamber andprovided with a longitudinal series of-"-.beater" blades '15, which arepreferably inclined to the \cir-, cula'rplane ofrotationof said blades,so as to tend 'to move the material toward the outlet neck 13 of thefreezing chamber during. their. operation of heating or stirring thematerial. I 1

head 11 so' as to p g means hereinafter 9o 16 is a hollow shaftsurrounding the aforesaid axially arranged shaft 14 and fitting andturning thereon. Said shaft 16 extends through a central orifice in theaforesaid closure head 10, and at its end within the freezing chamberand closely adjacent to the head thereof, is provided with a spider 17,

I to the outer ends of which are attached the y the bore of the collar19 forms the bearing for the forward end of the axially arranged shaft14, above described.

20 are a series of channel bars extending longitudinally within thefreezing chamber and secured at their respective ends to the .aforesaidspiders 17 and 18. The longitudinal channels in said bars constitutecontaining cavities for the series of scraper blades by which the frozenmaterial is removed from the inner circular wall surface of the freezingchamber, as fast as it accumulates thereon.

21 are the series of scraper blades above referred to. Each bladepreferably consists of a number of sections placed end to end in thelongitudinal channels of the channel bars 20 aforesaid.

22 are a series of springs arranged be tween the scraper blades 21 andthe channel bars 20, and adapted to yieldingly hold said scraper bladesin contact with the inner circular wall of the freezing chamber.

23 is a bevel gear attached to the rear end ofthe axial shaft 14aforesaid, and 24 is a companion bevel gear secured to the hollow shaft16 aforesaid, the said bevel gears being in separated relation as shown.

25 is a driving bevel gear meshing with the aforesaid bevel gears 23 and24, and adapted to rotate the same in opposite directions, and attain acorresponding rotation in opposite directions of the beater blades 15 anthe scra er blades 21; the reverse operation of said parts having fromextended practical experience been found to materially aid in theproduction of ice-cream and other ices of the desired granular nature.

26 is a countershaft carryin the bevel gear 25, and provided with adriving pulley 27 for belt connection with a suitable power A materialpart of the present improvement consists in the arrangement of thefreezing chamber, formedof a small diameter as compared with its length,in a fixed position inclined from a horizontal, with the inlet for thecream or like materials at liquid condition to the ordinary and naturalcondition of ice-cream, with an increase in volume from 35 to 60 percent., .is utilized in a very effective manner in causin the movement ofthe materialthrough the freezing chamber, and a discharge through theoutlet end thereof in a continuous manner of the frozen ice cream, suchaction'being aided in some cases by an inclined arrangement of thebeater blades, as for instance, in cases where the composition used isincapable of taking on the granular nature of high grade ice-cream.Under ordinary conditions, however, such blades need only perform thefunctions of beating the material and forcing the sameout against thewall of thefreezing chamber.

Having thus fully described my said invention what I claim as new anddesire to secure by Letters Patent, is

1. In a freezer, the combination of a casing, means for cooling theexterior of said casing, means for supporting the casing in a fixedupwardly inclined position, a closure head secured to the-lower end ofsaid casing, a removable closure head secured to the upper end of saidcasing and provided with an outlet neck, an inlet neck connected to thelower end of the casing, rotary agitating means arranged in the interiorof the casing and provided with a carrying shaft journaled in theaforesaid closure heads, and means for imparting rotation to said shaft.

2. In a freezer, the combination of a casremovable closure head securedto the upper end of said casing and pivoted with an outlet neck, aninlet neck connected to the lower end of the casing, rotary agitatingmeans arranged in the interior of the casing and comprising twooppositely rotating parts, an inner and an outer one, the inner parthaving material engaging blades to move the material toward the circularinner wall of the casing and the other part provided with a materialengaging blade having scraping'en'gagement with said inner wall of thecasing, and meansv for rotating said parts in opposite directions.

Signed at Chicago, Illinois, this 27th day of January 1906.

GEORGE F. nIoKsoNJ Witnesses ROBERT Bonus, M. H. HoLMEs.

